Coding Decoding (Old Pattern ) Tricks & Tips

GovernmentAdda has uploaded the coding and decoding shortcut methods, Tricks & Rules and Questions with Answers here. Candidates can check and go through it. Coding and decoding tips are very useful to those who are preparing for the attending the bank exam IBPS, SBI, LIC AAO, UPSC, IAS, CAT, XAT, MAT, SSC, GATE, and other competitive exams. We have also published the Solved examples for the coding and decoding aptitude.

Coding-decoding is one of the most important topic in reasoning section of any competitive exams. We can expect 5-6 questions from this section.

Types of Coding-Decoding:

Letter Coding

Number Coding

Symbol Coding

Number-Letter mixed coding

LETTER CODING:

Coding based on alphabets or words, given on some special pattern which you have to look and analyze and answer according to it. In this first you have to look the both letter code and notice the position of alphabets in the letter, and answer the common pattern available in the option.

Order List of Alphabets:

Learn this table by heart. This is the only shortcut or trick to solve coding – decoding questions fast in Bank exams.

Alphabets

Alphabetical Order

Reserve Order

A

1

26

B

2

25

C

3

24

D

4

23

E

5

22

F

6

21

G

7

20

H

8

19

I

9

18

J

10

17

K

11

16

L

12

15

M

13

14

N

14

13

O

15

12

P

16

11

Q

17

10

R

18

9

S

19

8

T

20

7

U

21

6

V

22

5

W

23

4

X

24

3

Y

25

2

Z

26

1

Example:

If “EXAM” is coded as “FYBN”, how is “RESULT” coded in the same language?

Solution:-

Eg: If COURSE is coded as FRXUVH, how is RACE coded in that code?

(1) HFDU

(2) UCFH

(3) UDFH

(4) UDHF

(5) UDFG

In the given code, each letter is moved three steps forward than the corresponding letter in the word. So R is coded as U, A as D, C as F, E as H. Hence (3) is the answer.

NUMBER CODING:

Number Coding are based on numbers or numerical digits, given on some special pattern which look likes some code. You have to look and analyze and answer according to it. In this first you have to look the both letter code and notice the numeric digit coded to that alphabet, and answer the common pattern available in the option.

Example:

If “ADDA” is coded as “5885”, “PEN” is coded as “147″, how is “EDEN” coded in the same language?

Solution:-

Case I: When numerical values are assigned to words.

Eg: If in a certain code ROPE is coded as 6821, CHAIR is coded as 73456 what will be the code forCRAPE?

(1) 73456

(2) 76421

(3) 77246

(4) 77123

(5) None of these

Clearly, in the given code, the alphabets are coded as follows.

R O P E C H A I

6 8 2 1 7 3 4 5

So CRAPE is coded as 76421, So the answer is (2)

Case II: When alphabetical code values are assigned to the numbers.

Eg: In a certain code 3456 is coded as ROPE & 15546 is coded as APPLE. Then how is 54613coded?

(1) RPPEO

(2) ROPEA

(3) POEAR

(4) PAREO

(5) None of these

Clearly in the given figures, the numbers are coded as follows.

3 4 5 6 1 4

R O P E A L

So 54613 is coded as POEAR. The answer is (3)

SYMBOL CODING:

Symbol Coding are based on Symbols. In this type of coding either alphabetical code are assigned to symbols or symbols are assigned to alphabets.

Example:

If “LESD” is written as “ @ $ & # “ , “NAC” is written as “ % ? * “, how “CANDLES” is coded in the same way?

Solution:-

Eg: 1. In a certain code ‘TOME’ is written as ‘ @ $ * ? ‘ and ARE is written as ‘ • £ ? ’ How can ‘REMOTE’ be written in that code?

(1) £ ? • $ @ ?

(2) @ ? * $ @ ?

(3) £ ? * $ @ ?

(4) Cannot be determined

(5) None of these

Sol: From the data we have

T – @

O – $

M – *

E – ?

A – •

R – £

E – ?

Hence REMOTE is coded as £ ? * $ @ ? So (3) is the answer.

NUMBER-LETTER MIXED CODING:

This type of coding are based on statements. Words in statement are coded by numbers. You have to look letters and notice the numeric digit coded to that letter, and answer the common pattern available in the option.

Example:

If “GOVERNMENT ADDA IS BEST” is coded as “ 8 6 4 2”, “GET BEST PREPARATION” is coded as “ 1 5 4 ”, “ GET GOVERNMENT JOB” is coded as “ 6 5 9 ”, how “BEST GOVERNMENT” is coded in the same way?

Solution:-

From the above statements we have to find the common words in the statements, and accordingly find the numeric code for the same word.

GOVERNMENT ADDA IS BEST = 8 6 4 2

GET BEST PREPARATION = 1 5 4

From, the above statement BEST is common in the statement and 4 is common in the code. So the code for BEST=4

GOVERNMENT ADDA IS BEST = 8 6 4 2

GET GOVERNMENT JOB = 6 5 9

From, the above statement GOVERNMENT is common in the statement and 6 is common in the code. So the code for GOVERNMENT=6

ANSWER:- BEST GOVERNMENT= 4 6

Eg: If in a certain code language, 851 means good sweet fruit; 783 means good red rose and 341means rose and fruit which of the following digits stands for sweet in that language?

(1) 8

(2) 5

(3) 1

(4) 3

(5) None of these

In the first and the second statements, the common code digit is 8 and the common word is good. So8 stands for good. In the first and the third statements, the common code digit is 1 and the common word is fruit. So 1 stands for fruit. Therefore in the first statement, 5 stands for sweet. Hence the answer is (2).

Eg: If tee see pee means drink fruit juice, see kee lee means juice is sweet, and lee ree mee meanshe is intelligent, which word in that language means sweet?

(1) see

(2) kee

(3) lee

(4) pee

(5) tee

In the first and the second statements the common word is juice and the common code word is see. So see means juice. In the second and the third statements, the common word is ‘is’ and the common code is lee. So lee means is. Thus in the second statement, the remaining word sweet is coded as kee. Hence the answer is (2).

Eg: If in a certain language FLOWER is written as EKNVDQ, what will be written as GNTRD?

(1) HEOUS

(2) HOUES

(3) HUOSE

(4) HOUSE

(5) None of these

Each letter of the word is one step ahead of the corresponding letter of the code.

E K N V D Q G N T R D

F L O W E R H O U S E

Thus HOUSE is written as GNTRD, So the answer is (4)

Example of Coding Decoding in Fictitious Language

Consider the question – In a certain code language:

1) ‘You are welcome’ is coded as ‘tip ab as’,

2) ‘He ate very sweet’ is coded as ‘an oh ap ol’,

3) ‘What is sweet’ is coded as ‘ak da al’,

4) ‘He welcome sweet people’ is coded as ‘do oh tip al’.

So what is code for each word?

Seems confusing right? But let us see the shortcut to solving coding decoding in fictitious language.

Steps Involved in Solving Coding Decoding in Fictitious Language

Step I:

Write words and their codes as given in the question in straight line with an arrow in middle. So we get,

Step II:

Find the common words and their corresponding codes. Encircle each pair with the same shape.

‘Welcome’ is a common word in 1st and 4th Its corresponding common code is ‘tip’ (as only ‘tip’ is common code in statement 1st and 4th) so we will make square around ‘welcome’ and ‘tip’.

‘Sweet’ is common word in 2nd, 3rd and 4th statement and its corresponding common code is ‘al’. So we will make an oval around ‘sweet’ and ‘al’.

‘He’ is common word in 2nd and 4th statement and its corresponding common code is ‘oh’. So we make a triangle around ‘he’ and ‘oh’.

Note: ‘Sweet’ and its code ‘al’ is present in statement 2nd and 4th along with ‘he’ and its code ‘oh’. Don’t get confused. Code for ‘sweet’ will be ‘al’ as it is present in statement 3rd also. So read all statements before encircling.

So the final diagram will look like this.

Now we can tell each word and its corresponding code

welcome → tip

he → oh

sweet → al

people → do (only word and code left in statement 4)

Step III:

Code for ‘you’ and ‘are’ can be either ‘ab’ or ‘as’

Code for ‘ate’ and ‘very’ can be either ‘an’ or ‘ap’

Code for ‘what and ‘is’ can be either ‘ak’ or ‘da’

That means we cannot determine exact code for ‘you’, ‘are’, ‘ate’, ‘very’, ‘what’ and ‘is’ as there are two possible codes for each word.

Tip: Code for word not given in question statement will be something different from codes given in question statements.

Questions With Answers Coding Decoding

If in a certain languageCHAMPIONis coded as HCMAIPNO, how can NEGATIVE be coded in that code?

(1) ENAGITEV

(2) NEAGVEIT

(3) MGAETVIE

(4) EGAITEVN

(5) NEGATIEV

In a certain languageKINDLEis coded as ELDNIK, how can EXOTIC be coded in that code?

(1) EXOTLC

(2) CXOTIE

(3) COXITE

(4) CITOXE

(5) EOXITC

If in a certain languageGAMBLEis coded as FBLCKF, how can FLOWER be coded in that language?

(1) GKPVFQ

(2) EMNXDS

(3) GMPVDS

(4) HNQYGT

(5) EKNVDQ

If in a certain languageFASHIONis coded as FOIHSAN, how can PROBLEM be coded in that code?

(1) ROBLEMP

(2) PLEBRUM

(3) PRBOELM

(4) RPBOELM

(5) PELBORM

IfFRIENDis coded as HUMJTK, how can CANDLE be written in that code?

(1) EDRIRL

(2) DCQHQK

(3) ESJFME

(4) FYOBOC

(5) DEQJQM

If in a certain code,TWENTYis written as 863985 and ELEVEN is written as 323039, how canTWELVE be written in that code?

(1) 863203

(2) 863584

(3) 863903

(4) 863063

(5) None of these

IfPALEis coded as 2134, EARTH is coded as 41590, how can is PEARL be coded in that language?

(1) 29530

(2) 24153

(3) 25413

(4) 25430

(5) None of these

IfROSEis coded as 6821, CHAIR is coded as 73456 and PREACH is coded as 961473, what will be the code for SEARCH?

(1) 246173

(2) 214673

(3) 214763

(4) 216473

(5) None of these

In a certain codenee tim seemeans how are you ; ble nee see means where are you. What will be the code for where?

(1) nee

(2) tim

(3) see

(4) Cannot be determined

(5) None of these

In a certain code languagepit nae tommeans apple is green ; nae ho tap means green and white andho tom ka means shirt is white. Which of the following represents apple in that language?

In a certain code language,743means Mangoes are good, 657 means Eat good food, and 934means Mangoes are ripe. Which digit means ripe in that language?

(1) 5

(2) 4

(3) 9

(4) 7

(5) Cannot be determined

In a certain code,247means spread red carpet, 256 means dust one carpet and 234 means one red carpet which digit in that code means dust?

(1) 2 (2) 3 (3) 5

(4) 6 (5) Cannot say

In a certain code language,134means good and tasty, 478 means see good pictures, and 729means pictures are faint. Which of the following digits stands for see?

(1) 4 (2) 7 (3) 9

(4) 8 (5) None of these

In a certain code253means books are old,546 means man is old and 378 means buy good books. What stands for ‘are’ in that code?

(1) 2 (2) 4 (3) 5

(4) 6 (5) 9

In a certain code languageTSSNOFFQis written as STRONGER then GQFDENN will be written as

(1) DOMEERF (2) FEEDORM (3) FREEDOM

(4) FREEDMO (5) None of these

IfFULFNHWis the code for CRICKET, EULGH will be coded as

(1) PRIDE (2) BRIDE (3) BLADE

(4) BLIND (5) None of these

If in a certain languageREMOTEis coded as ROTEME, which word would be coded as PNIICC?

(1) NPIICC (2) PICCIN (3) PINCIC

(4) PICNIC (5) PICINC

Directions (19-21): The number in each question below is to be codified in the following code.

Digit: 5 3 7 1 4 9 6 2 8

Letter: C J O X N Q T Z F

163542

(1) XTJCNZ (2) TXJCNZ (3) XTJCZN

(4) XTCJNZ (5) None of these

925873

(1) ZQCFOJ (2) QZCFOJ (3) QZCOFJ

(4) QZCFJO (5) None of these

741568

(1) ONCXTF (2) NOXCFT (3) ONCFCT

(4) ONXCTF (5) None of these

In a certain codeORANGEis written as ? ÷ @ • + * and EAT is written as ‘ * @ $’. How canROTATE be written in that code?

(1) ÷ ? $ @ * $ (2) ÷ ? $ @ • * (3) ÷ ? $ @ $ *

(4) ÷ ? $ * • @ (5) None of these

In a certain code ‘PALM’ is written as ‘£ @ ? $’ and ‘ARM’ is written as ‘ @ * $ ’. How can ‘ALARM’ be written in that code?

(1) @ £ @ ? $ (2) @ $ ? £ @ (3) ? @ @ £ $

(4) @ ? @ £ $ (5) None of these

In a certain code ‘HEAT’ is written as ‘? * $ @’ and ‘FINGER’ is written as ‘ £ • & * #’. How can ‘FATHER’ be written in that code?

(1)  $ @ ? * # (2) $ @ ? # * (3) @ ?  # $ *

(4) $ @ ? # * (5) None of these

In a certain code ‘BODE’ is written as ‘@ $ * ?’ and ‘EAT’ is written as ‘ ? • £ ’ How can ‘DEBATE’ be written in that code?

(1) ? * @ * £ • (2) * ? @ • £ ? (3) * ? @ * £ ?

(4) Cannot be determined (5) None of these

Answer Key

(1) 2. (4) 3. (2) 4. (5) 5. (1)

(1) 7. (2) 8. (2) 9. (5) 10. (3)

(1) 12. (3) 13. (3) 14. (4) 15. (1)

(3) 17. (2) 18. (4) 19. (1) 20. (2)

(4) 22. (3) 23. (5) 24. (1) 25. (2)

Solutions

(1) In the code each of the two letters are reversed in arrangement.2. (4) In the code the arrangement of the letters in the word is wholly reversed.3. (2) The letters preceding the first, third and fifth letters of the given word and those succeeding the second, fourth and last letters of the word in the alphabet form the code.4. (5) The 1st and the last letters of the word are kept as such in the code and all other letters in between them are wholly reversed.5. (1) In the code, the first letter is the second alphabet, the second letter is the third alphabet, the third letter is the fourth alphabet and so on after the corresponding letter in the word.6. (1) The letters are coded accordingly T as 8, W as 6, E as 3, L as 2, and V as 0. So TWELVE is coded as 863203.7. (2) The letters are coded accordingly P as 2, E as 4, A as 1, R as 5 and L as 3. So PEARL is coded as 24153.8. (2) The letters are coded accordingly S as 2, E as 1, A as 4, R as 6, C as 7 and H as 3. i.e., 2146739. (5) In the first and the second statements the common words are ‘are’ and ‘you’ and the common code words are nee and see. So nee and see means are and you. In the second statement the remaining code ble means where.10. (3) In the first and the second statements, the common code word is nae and the common word is green. So nae means green. In the first and the third statements, the common code word is tom and the common word is is so tom means is. Therefore in the first statement pit means apple.11. (1) In the first and the second statements the common code is tingo and the common word is flower. So tingo means flower. In the second and the third statements, the common code is mst and the common word is sweet. So mst means sweet. Therefore in the second statement, rho means fragranee.12. (3) In the first and the third statements, the common code digits are 4 and 3 ; and the common words are mangoes and are. So 4 and 3 are the codes for mangoes and are. Thus in the third statement 9 means ripe.13. (3) In the first and the second statements, the common code digit is 2 and the common word is carpet. So 2 means carpet. In the second and the third statements, the common code digit is 6 and the common word is one. So 6 means one. Therefore in the second statement, 5 means dust.14. (4) In the first and the second statements, the common code digit is 4 and the common word is good. So 4 stands for good. In the second and the third statements, the common code digit is 7 and the common word is pictures. So 7 stands for pictures. Thus in the second statement 8 stands for see.15. (1) In the first and the second statements, the common code digit is 5 and the common word is old, so 5 stands for old. In the first and third statements, the common code digit is 3 and the common word is books so 3 stands for books. Thus in the first statement, 2 stands for are.16. (3) The first letter is moved one step backward and second is moved one step forward the third letter is moved one step backward, the fourth letter one step forward and so on. So the answer is (3)17. (2) Each letter of the word is three steps ahead of the corresponding letter of the code.18. (4) The groups of second and third letters and fourth and fifth letters in the word interchange places in the code.19. (1) As given 1 is coded as X, 6 is coded as T, 3 is coded as J, 5 is coded as C, 4 is coded as N and 2 is coded as Z. So 163542 is coded as XTJCNZ.

20. (2) As given 9 is coded as Q, 2 as Z, 5 as C, 8 as F, 7 as O and 3 as J. So 925873 is coded as QZCFOJ.

21. (4) 7 is coded as O, 4 as N, 1 as X, 5 as C, 6 as T and 8 as F. So 741568 is coded as ONXCTF.